EP 0494259 B1 19940810 - TEMPERATURE CONTROL OF A HEATED PROBE.
Title (en)
TEMPERATURE CONTROL OF A HEATED PROBE.
Title (de)
TEMPERATURREGELUNG VON EINER GEHEIZTEN PROBE.
Title (fr)
REGULATION DE LA TEMPERATURE D'UNE SONDE CHAUFFEE.
Publication
Application
Priority
- US 9005524 W 19900927
- US 41517189 A 19890929
Abstract (en)
[origin: WO9105300A1] A method and apparatus for precisely controlling the temperature of a heated tip are disclosed. The temperature of a thermocouple within the tip is sensed at a selected rate. The sensed temperature is compared with a preselected temperature set by a user. The power provided to heat the tip is varied to cause the tip to achieve the selected temperature. If an AC power source is used, the temperature sensed at each zero crossing of the power source and the amount of power provided within that cycle is based on the temperature of the tip sensed within the same cycle. The duration of time that heat is applied to the probe within the cycle is varied to achieve the desired temperature. If a DC power source is used, the temperature of the tip is sensed at selected intervals. The sensed temperature controls the amount of power provided to heat the tip. The exact temperature of the tip is thus advantageously controlled to provide the desired heating.
IPC 1-7
IPC 8 full level
A61B 18/04 (2006.01); A61B 18/08 (2006.01); A61C 5/02 (2006.01); G05D 23/19 (2006.01); G05D 23/22 (2006.01); A61B 17/00 (2006.01); A61C 5/04 (2006.01)
CPC (source: EP US)
A61B 18/082 (2013.01 - EP US); A61C 5/55 (2017.01 - EP US); G05D 23/1913 (2013.01 - EP US); G05D 23/22 (2013.01 - EP US); A61B 2017/00097 (2013.01 - EP US)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
WO 9105300 A1 19910418; AT E109906 T1 19940815; CA 2066592 A1 19910330; CA 2066592 C 19960709; DE 69011523 D1 19940915; DE 69011523 T2 19941201; EP 0494259 A1 19920715; EP 0494259 B1 19940810; JP 2859958 B2 19990224; JP H05501022 A 19930225; US 5043560 A 19910827
DOCDB simple family (application)
US 9005524 W 19900927; AT 90915619 T 19900927; CA 2066592 A 19900927; DE 69011523 T 19900927; EP 90915619 A 19900927; JP 51452590 A 19900927; US 41517189 A 19890929